Russell Sherwood might be a good contact
Unfortunately I do not know how to contact him. He had a tri-gear retractable Glasair powered by a Suraru and the speed was outstanding until a brake failure on landing took him into and off runway encounter with a ditch resulting in extensive damage. He has not even started a repair process and it may never fly again. I had the impression that he developed the P-51 like cooling system but I do not know that for a fact. The point is he had it on his airplane and it seemed to work perfectly for several races - he was untouchable. If a guy could talk to him about it I don't think the guy would come away empty handed.
944 2011 West Tesas 100 6/18/11 Sprint Glasair I RG Sherwood, Russell & Rhea 218.76 251.74
1020 Indy Air Race 8/13/11 Sprint Glasair IRG Sherwood, Russell & Rhea 215.37 247.84
898 Memorial 130, Terrell, TX 5/28/11 Sprint Glasair I RG Sherwood, Russell & Rhea 214.18 246.47
919 Big Muddy, Carbondale, IL 6/4/11 Sprint Glasair I RG Sherwood, Russell & Rhea 212.71 244.78
872 Lone Star Air Rally 5/14/11 Sprint Glasair I RG Sherwood, Russell & Rhea 211.69 243.60
775 Rocket 100, 2010 11/20/10 Sprint Glasair I RG Sherwood, Russell & Rhea 210.72 242.49
832 Texoma 100, 2011 4/16/11 Sprint Glasair I RG Sherwood, Russell & Rhea 208.48 239.82
808 Taylor 150, 2011 4/2/11 Sprint Glasair I RG Sherwood, Russell & Rhea 206.01 237.07
862 BCAF 2011 4/30/11 Sprint Glasair I RG Sherwood, Russell & Rhea 199.01 229.02
585 Sulphur Springs 130 7/18/10 Sprint Glasair*I RG Sherwood, Russell & Rhea 198.49 228.42
714 Grace Flight 2010 10/2/10 Sprint Glasair I RG Sherwood, Russell & Rhea 197.74 227.54
496 Taylor 150 4/11/10 Sprint Glasair I RG Sherwood, Russell & Rhea 189.05 217.55
Bob Axsom